... lack, sequence protection . NAKF111T SpecifictionsMain function:Temperature display, Refrigeration Control;Compressor overload, phase lack, sequence protection;Crankshaft heating;Provide one ... display;Can install the cooling water pump (optional);With a tripping device with buzzer;emperature display range: -50°C~125 ... .5KW,10.5KW (About 8Ph,10Ph,15Ph) Electric control box with a tripping device NAK111T